Problem:
 f(g(x,a(),b())) -> x
 p(a()) -> c()
 g(f(h(c(),d())),x,y) -> h(p(x),q(x))
 q(b()) -> d()

Proof:
 Nonconfluence Processor:
  terms: f(h(p(a()),q(a()))) *<- f(g(f(h(c(),d())),a(),b())) ->* f(h(c(),d()))
  Qed